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Contract

0x2901f5F1D4C99f9eeE36ccD9A264729c5Dd35c11

Overview

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0 ETH

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$0.00

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Permit1294686512024-12-18 15:34:3929 days ago1734536079IN
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Transfer1289967942024-12-07 17:26:0540 days ago1733592365IN
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Permit1279995892024-11-14 15:25:5563 days ago1731597955IN
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Permit1279834322024-11-14 6:27:2163 days ago1731565641IN
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Permit1275549502024-11-04 8:24:3773 days ago1730708677IN
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Permit1273572572024-10-30 18:34:5178 days ago1730313291IN
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Permit1264688922024-10-10 5:02:4198 days ago1728536561IN
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Permit1262963572024-10-06 5:11:31102 days ago1728191491IN
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Transfer1254210932024-09-15 22:56:03123 days ago1726440963IN
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Transfer1254210912024-09-15 22:55:59123 days ago1726440959IN
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Approve1252506212024-09-12 0:13:39127 days ago1726100019IN
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Permit1252415352024-09-11 19:10:47127 days ago1726081847IN
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Permit1232085382024-07-26 17:44:13174 days ago1722015853IN
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Permit1228741482024-07-18 23:57:53182 days ago1721347073IN
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Permit1228730862024-07-18 23:22:29182 days ago1721344949IN
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Permit1227699872024-07-16 14:05:51184 days ago1721138751IN
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Permit1227688312024-07-16 13:27:19184 days ago1721136439IN
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Permit1227684572024-07-16 13:14:51184 days ago1721135691IN
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Permit1226998452024-07-14 23:07:47186 days ago1720998467IN
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Permit1219873432024-06-28 11:17:43202 days ago1719573463IN
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Permit1216421332024-06-20 11:30:43210 days ago1718883043IN
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Permit1204361032024-05-23 13:29:43238 days ago1716470983IN
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Permit1202111102024-05-18 8:29:57243 days ago1716020997IN
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Permit1196516792024-05-05 9:42:15256 days ago1714902135IN
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1075582852023-07-30 11:09:07536 days ago1690715347
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1075527202023-07-30 8:03:37536 days ago1690704217
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1075527202023-07-30 8:03:37536 days ago1690704217
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1075422252023-07-30 2:13:47537 days ago1690683227
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1074909472023-07-28 21:44:31538 days ago1690580671
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1074348452023-07-27 14:34:27539 days ago1690468467
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x4C8DC708...703245a40
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
VaultToken

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 10000 runs

Other Settings:
default evmVersion, MIT license
/**
 *Submitted for verification at optimistic.etherscan.io on 2022-08-10
*/

// Sources flattened with hardhat v2.9.6 https://hardhat.org

// File @rari-capital/solmate/src/tokens/[email protected]

pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}


// File contracts/interfaces/IPolynomialVaultToken.sol

pragma solidity 0.8.9;

interface IPolynomialVaultToken {
    function mint(address _user, uint256 _amt) external;
    function burn(address _user, uint256 _amt) external;

    function totalSupply() external view returns (uint256 totalSupply);
}


// File contracts/interfaces/IPolynomialVault.sol

pragma solidity 0.8.9;

interface IPolynomialVault {}


// File contracts/core/VaultToken.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

contract VaultToken is ERC20 {

    /// -----------------------------------------------------------------------
    /// Variables
    /// -----------------------------------------------------------------------

    /// @notice Corresponding Polynomial Vault
    IPolynomialVault public vault;

    /// -----------------------------------------------------------------------
    /// Modifiers
    /// -----------------------------------------------------------------------

    modifier onlyPolynomialVault {
        if (msg.sender != address(vault)) {
            revert OnlyPolynomialVault(address(this), msg.sender, address(vault));
        }
        _;
    }

    constructor(
        string memory name,
        string memory symbol
    ) ERC20(name, symbol, 18) {}

    function mint(address _user, uint256 _amt) external onlyPolynomialVault {
        _mint(_user, _amt);
    }

    function burn(address _user, uint256 _amt) external onlyPolynomialVault {
        _burn(_user, _amt);
    }

    function setVault(IPolynomialVault _vault) external {
        if (address(vault) != address(0x0)) {
            revert();
        }
        vault = _vault;
    }

    /// -----------------------------------------------------------------------
    /// Errors
    /// -----------------------------------------------------------------------

    error OnlyPolynomialVault(address thrower, address caller, address vault);
}

Contract Security Audit

Contract ABI

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Deployed Bytecode

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Swarm Source

ipfs://2b92c0c70dc531c72f4ff7d76b761eafcaaf6eb492593131b8c26709c0383526

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.